Sökning: "Tillämpad geologi"
Visar resultat 21 - 25 av 95 avhandlingar innehållade orden Tillämpad geologi.
21. Fractionation of the stable silicon isotopes : analytical method developments and selected applications in geochemistry
Sammanfattning : During the last few decades, variations in the 'natural' isotopic abundances of stable elements (termed 'fractionation') have received considerable interest from the scientific community. Though analytical methods and techniques for the measurement of isotopic abundances with adequate figures of merit have been available for light elements (e.g. LÄS MER
22. Fractionation of the stable silicon isotopes studied using MC-ICP-MS : analytical method developments and applications in geochemistry
Sammanfattning : In spite of the high Si abundance in natural systems, expected significant mass-dependent fractionations, and the importance of the element in many areas of the Earth sciences (focusing on e.g. LÄS MER
23. Development of optimization procedures for gravity and magnetic interpretation and their application to some geological structures in northern Sweden
Sammanfattning : .... LÄS MER
24. Air mass boundary identification : improvement of precipitation phase determination in surface based modeling
Sammanfattning : Snowpack properties derived from hydrological models play an important role for many ecological, water resource, and climate applications; such as winter survival of plants, reindeer, small mammals and birds, avalanche hazards, glaciers and polar ice accumulation, growth of sea and lake ices, climate change, snow melt flooding etc. These hydrological models need accurate precipitation phase discrimination schemes to closely portray e. LÄS MER
25. Trace metal speciation in fresh and brackish waters using ultrafiltration, DGT and transplanted aquatic moss
Sammanfattning : Distribution, mobility, and toxicity of metals in natural waters are strongly related to their aqueous speciation. To understand the behaviour of an aqueous element and the transformation between chemical species, there is a need for reliable methods that enable measurements of specific fractions of metals. LÄS MER